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Key Terms:11.1, 11.2
key terms 11.1 & 11.2
Key Term | Definition |
---|---|
Earthquake | The shaking that results from the movement of rock beneath Earth's surface. |
Stress | A force that acts on rock to change its shape or volume. |
Shearing | Stress that pushes rock in opposite directions. |
Tension | Stress that stretches rock so that it becomes thinner in the middle. |
Compression | Stress that squeezes rock until it folds or breaks. |
Fault | A break or crack in the Earth's lithosphere along which rocks move. |
Strike-slip Fault | A type of fault where rocks on either side move past each other sideways with little up-or-down motion. |
Normal Fault | A type of fault where the hanging wall slides downward and is caused by tension in the crust. |
Reverse Fault | A type of fault where the hanging wall slides upward and is caused by compression in the crust. |
Hanging Wall | The block of rock that forms the upper half of a fault. |
Footwall | The block of rock that forms the lower half of a fault. |
Fold | A bend in rock that forms where part of the Earth's crust is compressed. |
Plateau | A landform that has a more or less level surface and is elevated high above sea level. |